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期刊论文
Phase-Coupling-Induced Ultraslow Light Propagation in Solids at Room Temperature
PHYSICAL REVIEW LETTERS VOLUME 93, NUMBER 13,-0001,():
We show that the group velocities of light pulses can be decelerated dramatically by the use of a dispersive phase-coupling effect through a wave mixing process.We have observed experimentally such a phase-coupling-induced ultraslow light propagation with a group velocity as low as 0.05m/s in a photorefractive Bi12SiO20 crystal at room temperature. Moreover, the ultraslow light is amplified in the Bi12SiO20 crystal because of the unidirectional energy transfer from a coupling beam to the ultraslow light. This technique to produce ultraslow light propagation is valid for all nonlinear wave mixing processes with a dispersive phase-coupling effect.
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